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View article: TauSpinner Algorithms for Including Spin and New Physics Effects in \(\gamma \gamma \rightarrow \tau \tau \) Process
TauSpinner Algorithms for Including Spin and New Physics Effects in \(\gamma \gamma \rightarrow \tau \tau \) Process Open
The possible anomalous New Physics contributions to the electric and magnetic dipole moments of the \(\tau \) lepton have brought renewed interest in development of new charge-parity violating signatures in the \(\tau \)-pair production at…
View article: Monte Carlos for tau lepton - Standard Model and new physics signatures
Monte Carlos for tau lepton - Standard Model and new physics signatures Open
One of the purposes of High Energy accelerator experiments is confrontation of theory and measurements in ever new realms. Any new agreement extends theory applicability domain, any discrepancy hints to unexplained, calling for better calc…
View article: Monte Carlo Event Generator updates, for tau pair events at Belle II energies
Monte Carlo Event Generator updates, for tau pair events at Belle II energies Open
The Monte Carlo for lepton pair production and \tau decays consist of KKMC for lepton pair production, tauola for \tau lepton decays and photos for radiative corrections in decays. An effort for adaptation of the system for precision d…
View article: TauSpinner algorithms for including spin and New Physics effects in $γγ\rightarrow ττ$ process
TauSpinner algorithms for including spin and New Physics effects in $γγ\rightarrow ττ$ process Open
The possible anomalous New Physics contributions to electric and magnetic dipole moments of the $τ$ lepton has brought renewed interest in development of new charge-parity violating signatures in the $τ$-pair production at Belle II energie…
View article: <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>τ</mml:mi></mml:mrow></mml:math>-lepton pair spin in proton-proton LHC collisions for anomalous dipole moments
-lepton pair spin in proton-proton LHC collisions for anomalous dipole moments Open
The spin correlations in the pair of τ leptons produced in high-energy proton-proton collisions are studied. The invariant mass of the τ-lepton pair is chosen close to the Z-boson mass; in these conditions, Z-boson exchange gives the domin…
View article: Amplitude-Based IR-Improvement in Precision LHC/FCC Physics
Amplitude-Based IR-Improvement in Precision LHC/FCC Physics Open
We present recent results based on the IR-improvement of unintegrable singularities in the infrared regime via amplitude-based resummation in QED $\times$ QCD $\subset$ SU(2)$_{L} \times$ U$_{1} \times$ SU(3)$_{c}$. In the context of preci…
View article: Pseudo-observables and Deep Neural Network for mixed CP -- H to tau tau decays at LHC
Pseudo-observables and Deep Neural Network for mixed CP -- H to tau tau decays at LHC Open
The consecutive steps of H to tau tau cascade can be useful for the measurement of Higgs couplings and parity. The analysis methos of ATLAS and CMS Collaborations was to fit a one-dimensional distribution of the phi* angle, phi*, which is …
View article: KKMCee: Multi-photon MC for lepton and quark pair production at lepton colliders
KKMCee: Multi-photon MC for lepton and quark pair production at lepton colliders Open
We present an overview of the Monte Carlo event generator KKMCee for lepton and quark pair production in the high energy electron-positron annihilation process. We note that it is still the most sophisticated event generator for such proce…
View article: Phenomenology of matching exponentiated photonic radiation to a QED-corrected parton shower in KKMChh
Phenomenology of matching exponentiated photonic radiation to a QED-corrected parton shower in KKMChh Open
KKMChh is a precision Monte Carlo program for photonic and electroweak radiative corrections to hadron scattering, implementing the amplitude-level exponentiation originally developed for electron-positron scattering at the quark level, mo…
View article: Collinearly Enhanced YFS MC Approach to Precision High Energy Collider Physics
Collinearly Enhanced YFS MC Approach to Precision High Energy Collider Physics Open
We improve the YFS IR resummation theory so that it includes all of the attendant collinear contributions which exponentiate. The attendant new resummed contributions are shown to agree with known results from the collinear factorization a…
View article: Electron-positron, parton-parton, and photon-photon production of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>τ</mml:mi></mml:math>-lepton pairs: Anomalous magnetic and electric dipole moments spin effects
Electron-positron, parton-parton, and photon-photon production of -lepton pairs: Anomalous magnetic and electric dipole moments spin effects Open
Anomalous contributions to the electric and magnetic dipole moments of the τ lepton from new physics scenarios have brought renewed interest in the development of new charge-parity violating signatures in τ-pair production at Belle II ener…
View article: Collinearly enhanced realizations of the Yennie-Frautschi-Suura (YFS) MC approach to precision resummation theory
Collinearly enhanced realizations of the Yennie-Frautschi-Suura (YFS) MC approach to precision resummation theory Open
We extend the Yennie-Frautschi-Suura (YFS) IR resummation theory to include all of the attendant collinear contributions which exponentiate. This improves the original YFS formulation in which only a part of these contributions was exponen…
View article: New Results from IR-Improved Amplitude-Based Resummation in Quantum Field Theory
New Results from IR-Improved Amplitude-Based Resummation in Quantum Field Theory Open
There is a continuing effort to support and prepare the precision physics programs for the present and planned future colliders such as HL-LHC, FCC, CLIC, CEPC, and CPPC. We discuss new results from IR-improved amplitude-based resummation …
View article: New Results from IR-Improved Amplitude-Based Resummation in Quantum Field Theory
New Results from IR-Improved Amplitude-Based Resummation in Quantum Field Theory Open
There is a continuing effort to support and prepare the precision physics programs for the present and planned future colliders such as HL-LHC, FCC, CLIC, CEPC, and CPPC. We discuss new results from IR-improved amplitude-based resummation …
View article: Electron-positron, parton-parton and photon-photon production of $τ$-lepton pairs: anomalous magnetic and electric dipole moments spin effects
Electron-positron, parton-parton and photon-photon production of $τ$-lepton pairs: anomalous magnetic and electric dipole moments spin effects Open
Anomalous contributions to the electric and magnetic dipole moments of the $τ$ lepton from new physics scenarios have brought renewed interest in the development of new charge-parity violating signatures in $τ$-pair production at Belle II …
View article: Evaluation of Photos Monte Carlo ambiguities in case of four fermion final states
Evaluation of Photos Monte Carlo ambiguities in case of four fermion final states Open
With the increasing precision requirements and growing spectrum of applications of Monte Carlo simulations the evaluation of different components of such simulations and their systematic ambiguities become of utmost interest. In the follow…
View article: Spin correlations in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>τ</mml:mi></mml:math>-lepton pair production due to anomalous magnetic and electric dipole moments
Spin correlations in -lepton pair production due to anomalous magnetic and electric dipole moments Open
We present a simple algorithm for the calculation of event weights embedding the effects of anomalous electric and magnetic dipole moments in simulation of e–e+ → τ–τ+(nγ) events, and the subsequent decay of the τ-leptons produced. The i…
View article: Symmetries of spin amplitudes: applications for factorization and Monte Carlo solutions
Symmetries of spin amplitudes: applications for factorization and Monte Carlo solutions Open
For phenomenology of High Energy Physics experiments, Known Physics and New Physics phenomena, predictions need to be available. One has to take into account results of diverse research activities. On experiments side this includes control…
View article: KKMChh: Matching CEEX Photonic ISR to a QED-Corrected Parton Shower
KKMChh: Matching CEEX Photonic ISR to a QED-Corrected Parton Shower Open
KKMChh adapts the CEEX (Coherent Exclusive Exponentiation) formalism of the\nMonte Carlo Program KKMC for Z boson production and decay to hadron scattering.\nAmplitude-level soft photon exponentiation of initial and final state\nradiation,…
View article: New developments in KKMChh: Quark-level exponentiated radiative corrections and semi-analytical results
New developments in KKMChh: Quark-level exponentiated radiative corrections and semi-analytical results Open
We describe a new semi-analytical program, KKhhFoam, which provides a simplified framework for testing the amplitude-level exponentiation scheme (CEEX) of the full KKMChh program in the semi-soft limit. The structure of the KKhhFoam integr…
View article: IR-Improved Amplitude-Based Resummation in Quantum Field Theory: New Results and New Issues
IR-Improved Amplitude-Based Resummation in Quantum Field Theory: New Results and New Issues Open
With the advancement of strategies for the precision physics programs for the HL-LHC, FCC-ee, FCC-hh, ILC, CLIC, CEPC, and CPPC, the need for proper control of the attendant theoretical precision tags is manifest. We discuss the role that …
View article: Mini-Proceedings of the STRONG2020 Virtual Workshop on "Space-like and Time-like determination of the Hadronic Leading Order contribution to the Muon $g-2$"
Mini-Proceedings of the STRONG2020 Virtual Workshop on "Space-like and Time-like determination of the Hadronic Leading Order contribution to the Muon $g-2$" Open
The mini-proceedings of the STRONG2020 Virtual Workshop "Space-like and Time-like determination of the Hadronic Leading Order contribution to the Muon $g-2$", November 24--26 2021, are presented. This is the first workshop of the STRONG202…
View article: Adequacy of Effective Born for electroweak effects and TauSpinner algorithms for high energy physics simulated samples
Adequacy of Effective Born for electroweak effects and TauSpinner algorithms for high energy physics simulated samples Open
Matching and comparing the measurements of past and future experiments call for consistency checks of electroweak (EW) calculations used for their interpretation. On the other hand, new calculation schemes of the field theory can be benefi…
View article: New Developments in KKMChh: Quark-Level Exponentiated Radiative Corrections and Semi-analytical Results
New Developments in KKMChh: Quark-Level Exponentiated Radiative Corrections and Semi-analytical Results Open
We describe a new semi-analytical program, KKhhFoam, which provides a simplified framework for testing the amplitude-level exponentiation scheme (CEEX) of the full KKMChh program in the semi-soft limit. The structure of the KKhhFoam integr…
View article: Monte Carlo Event Generator updates, for tau pair events at Belle II energies
Monte Carlo Event Generator updates, for tau pair events at Belle II energies Open
The Monte Carlo for lepton pair production and tau decays consist of KKMC for lepton pair production, tauola for tau lepton decays and photos for radiative corrections in decays. An effort for adaptation of the system for precision data to…
View article: HL-LHC Computing Review Stage-2, Common Software Projects: Event Generators
HL-LHC Computing Review Stage-2, Common Software Projects: Event Generators Open
This paper has been prepared by the HEP Software Foundation (HSF) Physics Event Generator Working Group (WG), as an input to the second phase of the LHCC review of High-Luminosity LHC (HL-LHC) computing, which is due to take place in Novem…